Curling iron



F. M. KILLEN.

CURLING IRON.'

FILED 0cT.6. 1922.

Mar. 20, 1923.

Patented Mar. 20, 1923.

UNITED STATES 1,449,288 PATENT OFFICE.

FRANK M. KILLEN, F ASHEVILLE, NORTH CAROLINA, ASSIGNOR OF ONE-HALF TOEDWIN W. GROVE, OF ASHEVILLE, NORTH CAROLINA.

CURLING IRON.

Application led October 6, 1922.y Serial No. 592,746.

To all whom t may concern.

Be it known that I, FRANK M. KILLEN, a citizen of the United States,residing at at Asheville, in the county of Buncombe and State of NorthCarolina, have invented new and useful Improvements in Curling Irons, ofwhich the following is a specilication.

This invention relates to curling irons and has for its principal objectthe provision of means associated with a curling iron of the self-heatedty e for indicating the temperature of the cur ing iron when in use, tothe end that the operator of the iron l5 may be in a position to knowthe temperature thereof at all times and to guard against permitting itto become so hot as to be injurious to the hair. y

A more specic object of the invention is the provision of a temperatureindicating device in association'with a self-heated curling iron, soconstructed as to remain upright and constantly in view throughout therotary movement of the curling iron when 25 winding a curl.

Still another object of the invention is to provide a weighted devicejournally mounted upon .a curling iron and carrying a thermometer, oneend of which is retained in heat exchanging relation with the barrel ofsaid curling iron while the otherend is l carried upright by the weigted device,

throughout the rotary movement of said curling iron.

With the above and other objects in view, my invention consists in `theimproved curling iron illustrated in the accompanying drawings,described in the following speciication, and particularly claimed, andin such variations and `modifications thereof as will be obvious ,tothose skilled in the art to which my invention relates.

In the drawings accompanying and forming a part of this specification,and wherein the preferred embodiment of my invention is illustratedFigure 1 is a side elevation partly in section of a curling ironconstructed after the manner of my improved invention..

.Figure 2 is a cross section taken along the line 2 2 of VFigure 1.

Referring now' in detail to the several figures the numeral 1 representsthe metallic barrel or body of the curling iron which is provided withthe handle 2, the latter being made of non-heat conductive substance.The barrel 1 is hollow from its inner end to a point adjacent its outerend and houses the metallic heating element 3 which is of well knownconstruction and consists of a high resistance wire riveted between heatdilfusing elements 4 and 5 which contact frictionally with the innerwall of the metallic barrel. The outer end of the heating element iselectrically connected to metallicl clips 6 and 7 one of which makeselectrical contact with a pin 8 conductively associated with an annularterminal 9 the other being insulated from the pin 8 but conductivelyrelated to the annular terminal 10 which surrounds the pin 8 and isinsulated therefrom by means of the insulation sleeve 11. The pin 8passes through a pair of insulating washers 12 and is secured thereto bymeans of the nut 13. The

clips 6 and 7 are screwed to the insulating blocks 14 and 15 which areriveted together and tothe end of the heating element. The Washers 12areheld rigidly to the insulating blocks 14 and 15 by means of the annuar end 16 of the clip 7 which passes through a slot in said washers andengages the outer surface thereof.

In assembling the curling iron the barrel is slipped into the bore inthe upper end of the handle 2 and passed therethrough until the flange17 at the outer end of said barrel engages the bottom of the counterbore18 in the outer end of saidA handle. When the parts are in this positionthe electrical terminals 9 and 10 are housed within said counter-borethere being a space surrounding them sulicient to permit the insertionof the plug 19. This plug is constructed vinwardly with a pair ofinsulated contact shoes 2O and 21 which are adapted to frictionallyengage the terminals 9 and 10. Electrical connections from the contacts2O and 21 extend through the outer end of. the plug, in the cord 22 andare adapted to be connected to an ordinary electric -light socket. Dueto the annular form of the terminals 9 and 10 the plug 19 is swivellymounted with respect to the curling iron so that the latter may beturned when winding a curl without twisting the cord 22. f

The outer end of the ed .with a. cap screw 23 arranged axially of itsbarrel 1 is providhaving a bore 24 head in which the of its detachablecharacter,

spring clip is adapted to be inserted. rl`his clip is detachably held inplace by a set screw 26 entering the bore 24 through the side of thehead of the cap screw. rll`he outer end of the spring clip makesresilient contact with the barrel of the curling iron and is for thepurpose of holding the end of the lock of hair while it is being woundupon the curling iron by rotating the latter.

Journally mounted upon the barrel l adjacent the handle 2 is acylindrical casing 2T internally hollowed to form a chamber 28. Theportion of the barrel l of the curling iron which passes through thischamber is provided with a plurality of radial apertures '.29 openinginto the barrel l so that the heat from the heating element 3 may bedirectly radiated into the chamber 28. A thermometer 30 passes. throughan aperture 3l in the wall of the casing 27, the bulb of which liesadjacent the barrel 1 close to the apertures Q9; By being so disposedthe thermometer renders an accurate indication of the temperature of thebarrel of the curling iron. rll'he loiver side of the casing 2T isweighted by means of the imbedded weight 32 so that said casing remainsstationary while the curling iron is being rotated, the thermometer 30being thereby maintained in an upright position where it is constantlyin view. The exposed part of the thermometer is preferably enclosed in ametallic cage 33 to protect it from the risk of breakage.

. Endwise movement of the casing 27 along the barrel l is prevented bymeans of the collar 34 which is secured to the barrel l adjacent thecasing 27 by means of the set screw 35.

While the temperature indicating device in the preferred embodiment hereshown is associated with a curling iron Which in itself presents Somenovel features, its use is not limited to this type of iron, but, byvirtue it is adapted to be used as an accessory to any of the ordinaryforms of curling iron.

Having described my invention what l claim as new and desire to secureby Letters Patent, is

l. ln combination a curling iron and a temperature indicating devicerelatively movable thereto.

2. ln combination a curling iron comprising a rotatable barrel and atemperature indicating device associated with said barrel andmaintaining an upright position relative thereto.

f3. ln combination a curling iron comprising a heated barrel, atemperature indicating device rotatably mounted upon Said barrel andhaving a portion thereof arranged in heat exchanging relationship tosaid barrel.

i. ln combination a curling iron comprising a heated barrel and atemperature indicating devicerotatably mounted on said barrel and beingweighted on one side to maintain an upright position when said barrel isrotated.

5. In combination a curling iron comprising a barrel, a temperatureindicating device rotatably mounted With respect to said barrel andbeing Weighted on one side to maintain an upright position When saidbarrel is rotated, said temperature indicating device having a portionthereof arranged in heat exchanging relationship with said barrel. e

6. ln combination a curling iron having a heated barrel, a temperatureindicating device comprising a casing journalled upon said barreleccentrically of its center of mass and enclosing a heat conservingchamber adjacent said barrel and a thermometer mounted upon said casingwith the bulb thereof within said heat conserving chamber. v

7. ln combination a curling iron having a heated barrel, a temperatureindicating device comprising a casing journalled upon said barreleccentrically of its center of mass and enclosing a heat conservingchamber adjacent said barrel, and a thermometer mounted upon said'casingand projecting from the lighter side thereof, the bulb of saidthermometer being Within said heat conserving chamber.

8. In combination a curling iron comprising a heated barrel, atemperature indicating device rotatably mounted on said barrel and beingweighted on one side to maintain an upright position when said barrel isrotated and a curl engaging clip secured to the outer end of saidbarrel.

9; In combination a curling iron comprising a heated barrel, atemperature indicating device rotatably mounted on said barrel and beingweighted on one side to retain an 4upright position when said barrel isrotated,

an electric element for heating said barrel, a swivel connectorconductively related to said heating elementand a curl engaging clipsecured to said barrel.

10. ln combination a curling iron comprising a heated barrel providedWith a longitudinal chamber, heating elements Within Said chamber, atemperature indicating device comprising a casingjournalled upon saidbarrel eccentrically of its center of mass and enclosing a heatconserving chamber adjacent said barrel, a thermometer mounted upon saidcasing and having the bulb the-reof in said heat conserving chamber andan aperture communicating with said heat conserving chamber and Withthev chamber in said barrel. n

ln testimony whereof l affix my signature.

rnaivic M. Kitten.

